The Pine Bar at the Millennium Hotel in Mayfair offers a place for hotel guests to enjoy drinks and a light repast at any time of the day. The decor is all light wood-pine and well but subtly lit. As bright and friendly as it seems, this bar may have been the scene of former KGB officer Alexander Litvinenko's poisoning with radioactive polonium, an incident that could have come straight out of Cold War-era Ian Fleming. Don't worry though; the radiation won't stick around, and the bar still serves the same excellent food and drinks as before.